| Word | Digits in Telephone Number |
|---|---|
| Hardbacks | 427322257 |
| Hardballs | 427322557 |
| Hardboard | 427326273 |
| Hardboots | 427326687 |
| Hardbound | 427326863 |
| Hardcover | 427326837 |
| Hardedges | 427333437 |
| Hardeners | 427336377 |
| Hardening | 427336464 |
| Hardhacks | 427342257 |
| Hardheads | 427343237 |
| Hardihood | 427344663 |
| Hardiment | 427346368 |
| Hardiness | 427346377 |
| Hardliner | 427354637 |
| Hardnoses | 427366737 |
| Hardships | 427374477 |
| Hardstand | 427378263 |
| Hardtacks | 427382257 |
| Hardwares | 427392737 |
| Hardwired | 427394733 |
| Hardwires | 427394737 |
| Hardwoods | 427396637 |